By Mike Hughes
Gannett News Service
"Extreme Variety," 7 p.m., NBC. Swirling through modern show business are people who do strange and fascinating things. Most are fun to watch in this fast-paced special. There's aesthetic appeal to the muscle men, the female contortionists and the high-energy group called Inversion. Others are merely weird.
World Series, 2 p.m., Fox. In the fourth game of the series, San Francisco hosts Anaheim.
"Biography," 5 & 9 p.m., A&E. A profile of Farrah Fawcett.
"Unsolved History: Inside Hitler's Bunker," 6 & 9 p.m., Discovery. This hour uses modern technology to re-create Adolf Hitler's hiding place.